diff --git a/ApplicationCode/ProjectDataModel/Summary/RimSummaryCurveFilter.h b/ApplicationCode/ProjectDataModel/Summary/RimSummaryCurveFilter.h
index 334305c288..ac4e07b024 100644
--- a/ApplicationCode/ProjectDataModel/Summary/RimSummaryCurveFilter.h
+++ b/ApplicationCode/ProjectDataModel/Summary/RimSummaryCurveFilter.h
@@ -131,7 +131,5 @@ private:
     caf::PdmField< AppearanceTypeAppEnum >  m_regionAppearanceType;
 
     std::vector< caf::PdmPointer<RimSummaryCase> > m_selectionCache;
-
-    std::vector< std::set<RimSummaryCase*> > m_caseIndices;
 };